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Đề test chương 4 của thầy Hải Anh Terms in this set (50)The special files are: * A. block special file B
Strategy used for dumping a disk to tapes is: A. Physical dump D ____ are special files with listings of filenames and their attributes. A. Databases B ____ allocation allows files to use any storage space available on the disk. A. Add-on storage D A ____ is a group of related records that contains information to be used by specific application programs to generate reports. A. Field D The Joliet Extensions provide ________ A. Directory nesting deeper than 8 levels B Which of a system callI is to allow the file to appear in more than one directory? A. SEEK D Which of a system calI is to allow the system free up disk space? * A. OPEN B Which of the following is true about the data rate for disk management? A. the larger the block size is the lower the data rate is D The absolute pathname of a file in Linux is with respect to the A. Login directory C The i-nodes are used in which of the following allocation methods? A. Contiguous allocation D Operating system MS-DOS is implemented in which of the following allocation methods? A. Contiguous allocation C A table in main memory storing linked list allocation of disk blocks is called: * A. Linked list table B Increasing file system performance is implemented by _____ * A. Buffer cache B Which of the following is not file structure? A. Record sequence C File Structure can be: * A. Record sequence D ____ is a specialized WRITE command for existing data files that allows for appending records or for rewriting selected records in their original place in the file. * A. REWRITE C Which of the following information contain in the entry of the partition tables ? A. Starting and ending address of each partition and Marking a partittion as active A As long as users refer to files in the ____ directory, they can access their files without entering the complete name from the highest level to the lowest. A. Home C Which of the following is not special file? * A. Stream special file A Which of the following is not correct about hard links? A. Hard links require to increase the link count in the i-node for each linking C
Which of the following is true about the block size in disk space management A. the larger the block size is the lower the data rate is B Which of the following is correct about symbolic links? A. Symbolic links need not
space to store the name and the file pointed to C Which part of a disk is used to boot the computer? A. Root block B Which ways are used to keep track of free block in disk space management? A. A linked list method D Which mechanism is implemented by writing to the log file in file system management and optimization? A. None of the other choices C Which of a system callI is to allow the system announce that the file is coming and set some of the attributes? * A. RENAME D The primary disadvantage of contiguous storage is that ____. * A. It is an inefficient use of space C The File Manager writes the volume name and other descriptive information on an easy-to-access place on each unit: ____ of the CD or DVD * A. the outermost part B How many is maximum number of partition that most disk can be divided up into? A. 4 A ____ is a specialized WRITE command for existing data files that allows for adding records to end of the file. * A. UPDATE C Which of a system callI is to allow the system free up internal table space? A. CLOSE A Disk can be divided up into one or more partitions the first block of every partition is called: * A. Super block D Which solution is used to solve the "missing block" problem in file system consistency? * A. The file system checker adds the missing blocks to the free list A Which of a system callI is to allow the system fetch the attributes and list of disk addresses into main memory for rapid access on later call? A. RENAME C Which are allocation methods of disk blocks for files: A. Linked allocation C
Which of a system callI is to allow the system to specify from where to take the data in file? * A. OPEN C The disk block in a partition that includes a magic number, the number of blocks in the file system and other key administrative information is called: * A. MBR B Which of the following is not correct about hard links and symbolic links? A. Hard links can point to files on other machines A Which of the following is specified to indicate the directory where the file is located? * A. Root directory D A UNIX or Linux system might identify a file as: /usr/imfst/flynn/inventory.doc. What represents the root directory is ____. * A. flynn C Many computer users and some operating systems call subdirectories ____. * A. Folders A The File Manager writes the volume name and other descriptive information on an easy-to-access place on each unit: ____ of the magnetic disk A. stored at the beginning of the volume C The disk blocks in a partition that contains the top of the file system tree is called: A. Boot block B What is incorrect about contiguous allocation of files? A. It does not cause disk fragmentation A Which method is used to implement files to keep each file as a linked list of disk blocks? * A. Contiguous Allocation C A directory in UNIX/Linux consists of the following A. None of the other choices C The Linking technique that allows the file to appear in more than one directory are: * A. Hard link C File is generally defined to be: * A. None of the other choices C Which of the following is not a well-known technique for organizing the physical storage blocks for a file? * A. Indexed block allocation A Other sets by this creatorSE_Kỳ 6_SYB302c_SU22103 terms
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Which method is the best among file allocation methods?Explanation: The indexed allocation method is the best file allocation method because it removes the problem of contiguous and linked allocation.
Which allocation method is better for memory utilization?A partition allocation method is considered better if it avoids internal fragmentation. When it is time to load a process into the main memory and if there is more than one free block of memory of sufficient size then the OS decides which free block to allocate. 1.
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Which of follow methods used to allocate disk space to the files is difficult to grow file?
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